Let's calculate 8158 x 8309
8158 × 8309 = 8309 × (8158)
+ 8309 × 8 that equals 66472
+ 8309 × 50 that equals 415450
+ 8309 × 100 which equals 830900
+ 8309 × 8000 that results in 66472000

= 67784822
